prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Actinobacteria" Garrity and Holt 2001
       Class Actinobacteria Stackebrandt et al. 1997
         Order Frankiales Sen et al. 2014
           Family Frankiaceae Becking 1970 (Approved Lists 1980)
             Genus Frankia Brunchorst 1886 (Approved Lists 1980)